A-level Chemistry Question paper Paper 1 June 2018 - CIE Notes
嚜燕lease write clearly in block capitals.
Centre number
Candidate number
Surname
Forename(s)
Candidate signature
A-level
CHEMISTRY
Paper 1 Inorganic and Physical Chemistry
Tuesday 5 June 2018
Afternoon
Time allowed: 2 hours
Materials
For this paper you must have:
? the Periodic Table/Data Booklet, provided as an insert (enclosed)
? a ruler with millimetre measurements
? a scientific calculator, which you are expected to use where appropriate.
For Examiner*s Use
Question
Mark
1
2
3
Instructions
Use black ink or black ball-point pen.
Fill in the boxes at the top of the page.
Answer all questions.
You must answer the questions in the spaces provided. Do not write outside
the box around each page or on blank pages.
? All working must be shown.
? Do all rough work in this book. Cross through any work you do not want to be
marked.
?
?
?
?
Information
4
5
6
7
8
9
10
TOTAL
? The marks for questions are shown in brackets.
? The maximum mark for this paper is 105.
*jun187405101*
IB/M/Jun18/E12
7405/1
Do not write
outside the
box
2
Answer all questions in the spaces provided.
0 1
This question is about lattice enthalpies.
0 1 . 1
Figure 1 shows a Born每Haber cycle for the formation of magnesium oxide.
Complete Figure 1 by writing the missing symbols on the appropriate energy levels.
[3 marks]
Figure 1
*02*
IB/M/Jun18/7405/1
Do not write
outside the
box
3
0 1 . 2
Table 1 contains some thermodynamic data.
Table 1
Enthalpy change
/ kJ mol每1
Enthalpy of formation for magnesium oxide
每602
Enthalpy of atomisation for magnesium
+150
First ionisation energy for magnesium
+736
Second ionisation energy for magnesium
+1450
Bond dissociation enthalpy for oxygen
+496
First electron affinity for oxygen
每142
Second electron affinity for oxygen
+844
Calculate a value for the enthalpy of lattice formation for magnesium oxide.
Enthalpy of lattice formation
[3 marks]
kJ mol每1
Turn over for the next question
Turn over ?
*03*
IB/M/Jun18/7405/1
6
Do not write
outside the
box
4
0 2
0 2 . 1
Nitrogen and hydrogen were mixed in a 1:3 mole ratio and left to reach equilibrium in
a flask at a temperature of 550 K. The equation for the reaction between nitrogen and
hydrogen is shown.
N2(g) + 3H2(g) ? 2NH3(g)
When equilibrium was reached, the total pressure in the flask was 150 kPa and the
mole fraction of NH3(g) in the mixture was 0.80
Calculate the partial pressure of each gas in this equilibrium mixture.
0 2 . 2
[3 marks]
Partial pressure of nitrogen
kPa
Partial pressure of hydrogen
kPa
Partial pressure of ammonia
kPa
Give an expression for the equilibrium constant (Kp) for this reaction.
[1 mark]
Kp
*04*
IB/M/Jun18/7405/1
Do not write
outside the
box
5
0 2 . 3
In a different equilibrium mixture, under different conditions, the partial pressures of
the gases are shown in Table 2.
Table 2
Gas
Partial pressure / kPa
N2
1.20 ℅ 102
H2
1.50 ℅ 102
NH3
1.10 ℅ 103
Calculate the value of the equilibrium constant (Kp) for this reaction and give its units.
[2 marks]
Kp
0 2 . 4
Units
The enthalpy change for the reaction is 每92 kJ mol每1
State the effect, if any, of an increase in temperature on the value of Kp for this
reaction.
Justify your answer.
[3 marks]
Effect on Kp
Justification
9
Turn over ?
*05*
IB/M/Jun18/7405/1
................
................
In order to avoid copyright disputes, this page is only a partial summary.
To fulfill the demand for quickly locating and searching documents.
It is intelligent file search solution for home and business.
Related download
- gce chemistry a the exam formula
- as chemistry mark scheme paper 2 june 2018
- mark scheme for june 2018
- a level chemistry question paper paper 2 june 2018
- a level chemistry mark scheme paper 2 june 2018 science skool
- a level chemistry question paper paper 1 june 2018 cie notes
- examiner report a level paper 2 organic and physical chemistry
- as chemistry question paper paper 2 june 2018
- as chemistry examiner report paper 2 june 2018 revisely
- cambridge assessment international education cambridge ordinary level
Related searches
- a level chemistry notes pdf
- cie a level chemistry notes
- a level chemistry past paper by topic
- cie a level chemistry past paper
- cie a level chemistry past papers
- cie a level chemistry booklet
- cie a level chemistry pdf
- cie a level chemistry syllabus
- a level chemistry june 2020 paper3
- zimsec a level chemistry june 2020 paper3 mark schedule
- june 2012 paper 3 a level chemistry zimsec
- a level physics answer paper 1 june 2017